So a few days back I posted about Hamachi being purchased by Logmein. Since then I've been toying around with the programme, finding out what I could do with it. I discovered an excellent little trick that you can pull off; if two (or more) systems are on a Hamachi network, and have iTunes open with sharing on, every person in the network can access any other individual's iTunes network. Definitely worthwhile for you and your friends to set up with one another